BIGTREETECH Octopus PRO V1.1 H723

Product Description

The BIGTREETECH Octopus PRO H723 V1.1 is a premium, high-end 32-bit control board designed for demanding 3D printers and top-tier builds such as Voron, CoreXY, tool-changers, and high-speed Klipper printers.
Powered by the advanced STM32H723ZET6 processor running at 550 MHz, it delivers exceptional computing power, ultra-smooth motion control, and extremely fast processing for complex toolpaths.
The PRO version includes additional hardware protections, high-current outputs, improved heat dissipation, and native support for high-voltage TMC5160 stepper drivers.
With 11 driver slots, CAN bus, optocouplers, and extensive connectivity, the Octopus PRO H723 V1.1 is one of the most capable 3D printer motherboards available today.

Features

• Powerful STM32H723ZET6 ARM Cortex-M7 CPU @ 550 MHz

• Supports up to 11 stepper drivers (STEP/DIR, SPI, UART)

• Native support for high-current TMC5160 drivers

• All end-stops fully opto-isolated for maximum noise immunity

• 8 × PWM fan outputs with voltage selection (5V / 12V / 24V)

• Dual Z-axis support + sensorless homing + auto-leveling ports

• CAN bus for connecting EBB toolhead boards or expansions

• Multiple heater outputs (hotends, heated bed, auxiliary heaters)

• USB-C, microSD slot, GPIO, RGB LED ports

• Supports BLTouch, inductive probes, filament sensors, ADXL345, accelerometers

• Robust MOSFETs, fuse protections, and improved thermal layout

• Fully compatible with Marlin, RepRapFirmware (RRF), and especially Klipper

Specifications

• Microcontroller: STM32H723ZET6 (ARM Cortex-M7)

• Clock Speed: 550 MHz

• Driver Slots: 11 total (SPI/UART compatible)

• Fan Outputs: 8 × PWM + selectable voltage

• Heater Outputs: Hotend 1/2, heated bed, AUX heaters

• Input Voltage: 24V recommended (supports high-power systems)

• Connectivity:

  • CAN bus

  • USB-C

  • UART/SPI/GPIO

  • Probe ports

  • End-stops (opto-isolated)

• Compatible Firmware: Klipper (best performance), Marlin, RRF

• Dimensions: Standard Octopus/PRO layout

Applications

• High-end CoreXY printers (Voron 2.4 / Trident / Switchwire)

• High-speed Klipper setups (300–1000 mm/s input shaper optimized)

• Multi-extruder or tool-changer printers

• Printers requiring high-voltage or high-current drivers

• Large-format and industrial 3D printer builds

• Systems using CAN bus toolhead boards (EBB36/EBB42/HV boards)

• Complex machines with many fans, heaters, sensors